Well, it depends on what you want. If you want serious accuracy in a working rifle, then Boots Obermeyer or Mike Rock 5R Profile barrels in 30 caliber are about as good as it gets. Mike supplies the barrels for the Army SWS program and rumor has it for H-S Precision. If you are building benchrest, I'd have to recommend Kenny Jarrett. Kenny's throwaways are better than what you get from Shilen, Pac-nor, or Douglass.